Hiltrun Ratz

Movements and habitat use of feral house cats Felis catus, stoats Mustela erminea and ferrets Mustela furo, in grassland surrounding Yellow-eyed penguin Megadyptes antipodes breeding areas in spring

N. Alterio, Hiltrun Ratz · Biological Conservation · 1998 · 73 citations

Feral Animal, Stoats Mustela Erminea, Engineering +8

Predation by New Zealand sea lions (Phocarctos hookeri) as a threat to the viability of yellow-eyed penguins (Megadyptes antipodes) at Otago Peninsula, New Zealand

Chris Lalas, Hiltrun Ratz, Kirsty McEwan et al. · Biological Conservation · 2006 · 40 citations

Biology, Engineering, Wildlife Ecology +9

Hector's dolphin diet: The species, sizes and relative importance of prey eaten by <i>Cephalorhynchus hectori</i>, investigated using stomach content analysis

Elanor J. Miller, Chris Lalas, Steve Dawson et al. · Marine Mammal Science · 2012 · 28 citations

Engineering, Relative Importance, Prey Composition +16

Predator Identification from Bite Marks on Penguin and Albatross Chicks

Hiltrun Ratz, Henrik Moller, David Fletcher · Marine ornithology · 1999 · 27 citations · Full text

Biology, Animal Behaviour, Predator-prey Interaction +4

Effects of habitat and introduced mammalian predators on the breeding success of Yellow-eyed Penguins Megadyptes antipodes, South Island, New Zealand

Hiltrun Ratz, Brian R. Murphy · Pacific Conservation Biology · 1999 · 18 citations

Biology, Predation Risk, Engineering +12